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Assertion (A): Practical systems must be closed loop system.Reason (R): This is due to the fact that closed loop systems are least affected by parameter variations, stable, higher bandwidth, linear and more speed of response.(a) Both A and R are true and R is the correct explanation of A.(b) Both A and R are true but R is not the correct explanation of A.(c) A is true but R is false.(d) A is false but R is true.This question was addressed to me during an internship interview.I need to ask this question from Linearizing Effect and Regenerative Feedback in chapter Feedback Characteristics of Control Systems of Control Systems

Answer»

The correct option is (a) Both A and R are true and R is the correct explanation of A.

The explanation: PRACTICALLY systems USED must be LINEAR to avoid error, ease of calibration and also to get accurate RESULTS but the systems used are non-linear to avoid the error due to the linearity they are approximated.



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